PAN基低温碳化纤维的性能及应用  

Properties and Application of Polyacrylonitrile-based Low-temperature Carbonization Fibers

作　　者：马婕[1,2] 王成国[1,2] 于美杰[1,2] 张敏[1,2] 王启芬[1,2] 

机构地区：[1]山东大学材料液固结构演变与加工教育部重点实验室,山东济南250061 [2]山东大学碳纤维工程技术研究中心,山东济南250061

出　　处：《南京理工大学学报》2010年第2期275-278,共4页Journal of Nanjing University of Science and Technology

基　　金：国家"973"项目(2006CB605314);中国博士后科学基金(20080431207)

摘　　要：该文研制了碳化温度在600～900℃的聚丙烯腈(PAN)基低温碳化纤维,采用化学元素分析仪、广角X射线衍射仪和激光拉曼光谱仪分析了纤维的化学成分及微观结构,测试了纤维的力学及电学性能。结果表明:随着碳化温度的升高,纤维中碳元素质量分数提高,部分氮、氢、氧元素被去除;纤维线密度和断裂伸长率下降,体密度和拉伸强度上升;碳化过程中纤维内部乱层石墨结构体积分数提高,导致纤维体电阻率下降;低温碳化纤维/树脂复合涂层具有良好的防静电性能。The polyacrylonitrile（PAN）-based fibers are carbonized at temperature of 600~900℃.Chemical composition and microstructure of the fibers are characterized using elemental analyzer,wide-angle X-ray diffractometer and laser Raman spectrometer.Mechanical and electrical properties of the fibers are examined.The results indicate that with the increase of the carbonization temperature,the mass fraction of carbon increases;nitrogen,hydrogen and oxygen are partially removed from the fibers;linear density and elongation at break of the fibers decrease,volume density and tensile strength of the fibers increase;electrical resistivity of the fibers decreases drastically due to the increasing volume fraction of turbostratic graphite structure formed in carbonization process;low-temperature carbonization fiber/resin composite coatings with admirable antistatic property can be prepared.

关 键 词：碳化纤维 碳化温度 化学成分 微观结构 力学性能 电性能 

分 类 号：TQ342.74[化学工程—化纤工业]